Online Access Free 1Z1-805 Practice Test

Which code fragment is required to load a JDBC 3.0 driver?

• A.Class.forname ("org.xyzdata.jdbc.NetWorkDriver");
• B.DriverManager.loadDriver("org.xyzdata.jdbc.network driver");
• C.Connection con = Drivermanager.getConnection ("jdbc:xyzdata: //localhost:3306/EmployeeDB");
• D.Connection con = Connection.getDriver ("jdbc:xyzdata: //localhost:3306/EmployeeDB");

Given a resource bundle MessageBundle, what is the name of the default bundle file?

• A.MessageBundle.properties
• B.MessageBundle.xml
• C.MessageBundle.profile
• D.MessageBundle.java

Which three objects must a vendor provide implementations in its JDBC driver?

• A.Date
• B.Time
• C.Statement
• D.RuleSet
• E.Connection
• F.DriverManager
• G.SQLException

Given:
public class MyGrades {
private final List<Integer> myGrades = new ArrayList<Integer>();
private final ReadWriteLock rwlock = new ReentrantReadWriteLock();
public void addGrade(Integer grade) {
// acquire _______ lock
myGrades.add(grade);
// release __________ lock
}
public void averageGrades() {
// acquire _______ lock Line ** double sum = 0;
int i = 0;
for (i = 0; i < myGrades.size(); i++) {
sum += myGrades.get(i);
}
// release __________ lock Line ***
System.out.println("The average is: " + sum/(i+1));
}
}
Which pair's statements should you insert at lines ** and lines *** (respectively) to acquire and release the most appropriate lock?

• A.relock.WriteLock().acquire(); rwlock.writeLock().release();
• B.rwlock.readLock().acquire(); rwlock.readLock().release();
• C.rwlock.getLock().lock(); rwlock.getLock().Unlock();
• D.rwlock.readLock().lock(); rwlock.readLock().unlock();
• E.rwlock.writeLock().lock(); rwlock.WriteLock().unlock();
• F.rwlock.getLock().acquire(); rwlock.getLock().release();

Which two Capabilities does Java.util.concurcent.BlockingQueue provide to handle operation that cannot be handled immediately?

• A.Wait for space to become available in the queue before inserting an element.
• B.Increase the queue's capacity based on the rate of blocked access attempts.
• C.Automatically retry access to the queue with a given periodicity.
• D.Wait for the queue to contain elements before retrieving an element.